Happy spirits bewitched the city today as New York treated itself to a spooktacular Halloween.

Celebs and TV hosts were decked out in boo-tiful costumes – and at least one wasn’t afraid to start celebrating a little early.

Former Page Six Magazine columnist Lydia Hearst hosted a costume-masquerade party Thursday at 1 Oak – and sported a “Page Six Six Six” T-shirt with her high-waisted sequin shorts. She carried a copy of the New York Post.

“I was Lyin’ Lydia,” the publishing heiress and model told The Post today with a laugh. She referred to the headline “Lyin’ Lydia” on a Page Six item Tuesday, which reported she was “being less than truthful about quitting her column in Page Six Magazine.”

Hearst said she chose the costume because, “Why not have a laugh at the unfortunate situation that took place and make peace that way? Honestly, it’s meaningless to have some sort of battle in the media.”

Her ensemble was a take-off on an outfit worn in 2003 by Britney Spears, when she also donned a “Page Six Six Six” T-shirt, micro-skirt and fedora.

The haunting holiday, that concluded with last night’s 35th annual New York’s Village Halloween Parade, also featured morning talk-show hosts decked out in costumes.

The “Today” show’s Matt Lauer appeared as Humpty Dumpty. Meredith Vieira was Pinocchio – whose nose grew longer as she reassured her costumed co-host that “you absolutely do not look fat. Not at all.”

Jill Rappaport, dressed as Alfalfa, came over to say hello to Al Roker, a k a the Gingerbread Man. Her dog Petey, who apparently thought Roker looked good enough to nibble, gave him a surprise by sniffing below the belt.

Among various costume changes on “Live with Regis and Kelly,” Regis Philbin appeared as Joe Biden and Kelly Ripa as Sarah Palin.

And Brooke Shields was later spotted haunting downtown, wearing a set of cute cat’s ears.